Bar Notation
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Definition of Bar Notation
The process of writing repeating decimals or repeating pattern of digits by using a bar is called Bar Notation.
More about Bar Notation
Bar notation can be put with single or multi-digit repeating numbers or repeating patterns of decimals.
For a single-digit repeating decimal, the repeating number is written once and a bar is put over it.
For a multi-digit repeating decimal, the repeating pattern is written once and a bar is put over the digits from the first to the last one.
Examples of Bar Notation
= 0.666666 and can be written as 0.
= 0.428571428571428571 and can be written as 0.
Solved Example on Bar Notation
Which of the following is the correct bar notation for the number 4.13333?
Choices:
A.
B.
C.
D. 4.13
Correct Answer: A
Solution:
Step 1: For a single-digit repeating decimal, the repeating number is written once and a bar or dot is put over it.
Step 2: In 4.13333, only 3 is repeating.
Step 3: So, a bar can be put on 3 and the correct bar notation would be .